$${\mathcal {PT}}$$PT-symmetric dimers with time-periodic gain/loss function

@article{Psiachos2014mathcalD,
  title={\$\$\{\mathcal \{PT\}\}\$\$PT-symmetric dimers with time-periodic gain/loss function},
  author={Demetra Psiachos and Nick Lazarides and Giorgos P. Tsironis},
  journal={Applied Physics A},
  year={2014},
  volume={117},
  pages={663-672}
}
Abstract$${\mathcal {PT}}$$PT-symmetric dimers with a time-periodic gain/loss function in a balanced configuration where the amount of gain equals that of loss are investigated analytically and numerically. Two prototypical dimers in the linear regime are investigated: a system of coupled classical oscillators, and a Schrödinger dimer representing the coupling of field amplitudes, each system representing a wide class of physical models. Through a thorough analysis of their stability behavior… 

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